在CARR调试B阶段进行了热中子注量率相对分布测量,实验在堆芯达到满装载后采用金箔活化法进行。实验共计进行了4次开堆照射,根据测点位置不同,照射功率也有所不同,照射时间均为30min,采用功率监督片的方法对不同照射功率进行归一。实验中照射了各种规格的金探测片308片,活度测量采用γ-多道测量装置进行,经过活度测量并进行数据处理后,得到以下结果: The thermal neutron fluence rate distribution measurement was carried out in the B stage of CARR debugging. The experiment was carried out after the core was fully loaded with gold foil activation method. A total of four experiments carried out heap irradiation, according to different measuring point position, the irradiation power is also different, the irradiation time is 30min, using the method of monitoring the power of different irradiation power to normalize. Experiments were irradiated a variety of gold probe 308, activity measurement using γ-multi-channel measurement device, after measuring the activity and data processing, the following results were obtained: